redhat AS4 用户登陆问题

chensil

用户登陆系统时候,超慢.即使用root用户 su到一个普通的用户也超慢,查看syslog如下:
Mar  6 09:55:30 linux kernel: mtrr: type mismatch for f6000000,800000 old: uncachable new: write-combining
Mar  6 10:01:23 10.251.59.16 2127: *Mar  2 19:33:10.194 UTC: %LINK-3-UPDOWN: Interface FastEthernet0/23, changed state to down
Mar  6 10:02:00 10.251.59.16 2128: *Mar  2 19:33:12.390 UTC: %LINK-3-UPDOWN: Interface FastEthernet0/23, changed state to up
Mar  6 10:00:36 linux kernel: warning: many lost ticks.
Mar  6 10:01:10 linux kernel: Your time source seems to be instable or some driver is hogging interupts
Mar  6 10:01:41 linux kernel: rip default_idle+0x20/0x23
Mar  6 10:03:10 linux kernel: Warning: CPU frequency out of sync: cpufreq and timing core thinks of 1800000, is 2000000 kHz.
Mar  6 10:09:13 10.251.59.19 8319: .Mar  6 01:39:08.171 UTC: %LINK-3-UPDOWN: Interface FastEthernet0/16, changed state to down
Mar  6 10:10:10 10.251.59.19 8320: .Mar  6 01:39:10.380 UTC: %LINK-3-UPDOWN: Interface FastEthernet0/16, changed state to up
Mar  6 10:11:16 linux kernel: Warning: CPU frequency out of sync: cpufreq and timing core thinks of 2000000, is 1800000 kHz.
如何解决啊